Collapsible form



July 1, 1930. J. N. HELTZEL COLLAPSIBLE FORM Filed July 11, 1924 6Sheets-Sheet J.N.HELTZLL,

July 1, 1930. J. N. HELTZEL COLLAPSIBLE FORM 6 Sheets-Sheeb Filed July11, 1924 FIE-3.5.

FIGJfS.

July 1, 1930. J. N. HELTZEL COLLAPSIBLE FORM 6 Sheets-Sheet 3 Filed July11, 1924 FIG.8.

gnucufoz: J .N.HELTZEL.,

July 1, 1930. J. N. HELTZEL COLLAPSIBLE FORM Filed July 11, 1924 6Sheets-Sheet 4 J. N. HELTZEL July 1, 1930.

COLLAPSIBLE FORM Filed July 11, 1924 6 Sheets-Sheet 5 d N .HELTZEL,

attorney 6 Sheets-Sheet 6 \JANTHZLTZEL,

July 1, 1930. J. N. HELTZEL COLLAPSIBLE FORM Filed July 11, 1924 FIG.25.

Patented duty 1, 193% Unitas stares earner; @FFME JOHN N. HELTZEL,orwannnn, OEEQ COLLAPSIBLE roam Application filed m 11, 1924. Serial No.725,503.

The present invention relates to forms used ing the channel or voidtherein, and giving in the building of concrete and similar roads endviews of parts of the forms aswhen being and other surfacingconstructions, and the removed. primary object of the invention is theprovi- Fig. is a cross section of the completed sion of means forproducing a channel or void *road with the channel or groove filled. inthe road when built, usually at the center Fig. 6 is a cross section ofthe road at the line thereof, to be subsequently filled, so as tochannel, showing a form used supplementary produce a flexibleconstruction joint in the to the main forms, for the formation of aroad, which may also serve as atrafiic line or separate traffic line andexpansion or sealing 10 marker. joint. Another object is the provisionof means Fig. 7 is a view similar to Fig. 5 illustratfor placing adivision plate or strip in the ing a modification.

, road, for dividing the road into sections or Fig. 8 is a fragmentaryperspective view slabs having a flexible construction joint showing asecond construction with modifica- 0 between them, and such meansincluding protions. v

vision for the convenient formation of a chan- Fig. 9 is a cross'sectionof a completed road nel or groove in the road above the division as madeby the form shown in Fig. 8.

plate or strip, to be filled for sealing the joint Fig. 10 is aperspective view of a third form and producing a traffic line.construction.

a A further object is to provide novel col- Fig. ll is an end view of afourth modified lapsible forms for producing the channel orconstruction.

groove in the road in a convenient and facile Fig. .12 is a fragmentaryperspective View manner. A still further object is the proviof a fifthmodified form construction.

sion of novelmeans for supporting the collap- Fig. '13 is a fragmentaryperspective View 25 sible forms, division plates or strips and re: of a-siXth modified form construction. inforcing rods. Q V I Fig. 14: is afragmentary perspective view The invention also resides in the novelconof another modified construction. struction of the several devicestherein, and Flg. 15 1s a fragmentary plan view of the in the novelconstruction and assemblage of structure shown in Fig. 14:.

so the component parts, to enhance the utility Fig. 16 1s a horizontalsection on the line .and efficiency of the structure. 16 -16 of Fig. 14.

With the foregoing and other objects in Fig. 17 1s a crosssectionbf aroad builtiew, which will be apparent as the descripby the use Of theCOIIStI'UCtlOIl 0f the Flgs. tion proceeds, the invention resides in the1 and 16- a; construction and arrangement of parts, as g- 8 1s afragmentary perspective view hereinafter described and claimed, it beingf Q another modified construct on. understood that changes can be madewithin g 19 1s a p n View of t e pedest l shown the scopeof what isclaimed, without depart- 1n g- 18 and m n portlons 0f the strllca ingfrom the spirit of the invention. Ie WithEhe top or cap plate removed.40 The invention is illustrated in the accomg- 20 15 a cross SeCtlOIl011 e hue 20-20 panying drawings, whereinof Fig. 19.

Figure 1 is a fragmentary perspective view g- 2 IS a fr gm ntaryperspective view of one construction set up ready for the pour- 0f thetop or Cap plate used in the structure ing of the concrete. shown inFigs. 18, 19 and 20.

45 Fig. 2 is a fragmentary side elevation lg. 22 is a frag y p r p c vVleW 9 th f, p ti b ing br k n way d of the collapsible form shown inFigs. 18, 19' shown in section. 7 and 20.

- Fig. 3 is a plan view showing onepedestal Fig. 23 IS a cross sectionof a road built and adjacent portions of the structure. by use of thestructure shown in Figs. 18-22.

50 Fig. 4 is a cross section of the road show- Figs. 24 and 25 arefragmentary perspechas its lower edge spaced above the tive views ofother modified constructions.

Fig. 26 is a cross section showing the form of Fig. 25 collapsed in thechannel produced in the road.

Fig. 27 is a fragmentary perspective view of still another modifiedconstruction.

Fig. 28 is a cross section showing the form of Fig. 27 collapsed in thechannel produced in theroad, 4

Referring to Figs. 1 to 6, inclusive, there is shown a sheet metaldivision plate or strip 30 which is similar to division plates usedheretofore in road constructions, for divid-i ing or separating the roadinto opposite side sections or slabs, excepting that the plate or strip30, for the present purposes, 'is of less height than the divisionplates heretofore used, thereby obtaining a saving in material and cost.The division plate or strip, 30 is formed with an offset 31 -to form inone section or slab of the road and a complementing tongue on the othersection or slab, so that when the road breaks on the line of thedivision plate, the. same will have a tongue and groove joint, therebylocking the sections or slabs against relative vertical displacement.The strip or plate 30, as shown, sub-base, although it can be made toextend down to the sub-base, and the upper ed e of the plate or strip isspaced several inc es below the surface of the road whereas the ordinarydivision plate now in use extends close adjacent to the surface of theroad. The division plate or strip 30'is composed of sections disposedend to end.

In order to support the division plate 30 and other parts of thestructure, there are provided pedestals 32 which are formed from .sheetmetal as shown. Each pedestal comprises a base 33 to rest on thesub-base of the road, and an upwardly extending portion 34 f which, asseen in Figs. 1, 2 and 3, is inclined to overhang the base 33. Theportion 34 has a slot 35 o a shape to receive and accommodate thedivision plate 30, whereby the pedestals support the division plateabove the sub-base. The portion 34 of each pedestal has angularlextending flanges 36 above the base 33, and said flanges haveoutstanding wings 37, said flanges and wings tapering downwardly to thelower corners of the portion 34, thereby allowing for the flexing actionof the portion 34 relatively' to the base 33. By having the portion 33inclined, the pressure on the portion 34, especially during the tampingof the concrete, during which the tamper may operate over the formstructure, will be directed downwardly to the base 33, without atendency for tilting or'upsetting the pedestal, and the portion 34will'also' enable said rtion to spring downw'ardly'slightly .un er thetamping pressure and im acts- This slight resiliency of. the pedesta swill enable the pressure on the structure a groove the inclination ofstructure to give slightly during the tamping operation, while finishingthe road, and the pedestals are also prevented from tilting o'rupsetting inasmuch as the pressure on the portions 34 is in a directiontoward the bases of the corresponding pedestals. tals can be reversed,as seen in Fig. 2, so that they will'brace' one another to prevent thefrom displacing same longitudinally.

The flanges 36 and wings 37 are used for supporting reinforcing rods orbars consti tuting part of the mat which reinforces the concrete. Thus,transverse dowel or tie rods 38 extend through the flanges 36 andlongitudinal reinforcing rods 39 extend through the wings 37 saidflanges and wings having suitable openings or apertures to receive saidrods. As shown, the ends of the rods 38 are bent into hooks 40 to engageother longitudinal reinforcing rods 41 to prevent the rods 38 frompulling loose from the sections or slabs in which they are embedded.Various kinds and forms of reinforcing bars can be used, as will beapparent.

Collapsible forms, 42 and 43 are used for producing a channel or voidinthe upper surface ofthe road above the division plate 30,

and said forms are companions to one an- The pedes- The form 42comprises the side plates 44' r and 45 having their lower edges hingedtogether, as at 46,.so that said plates can be swung together and apart.A bar 47 fits in between the upper edges of the side plates 45 to spreadsaid plates apart and to close the space between them for preventingconcrete or other matter from falling down between said plates. Theportion 34 of each pedestal has a V-slot orm 42, and, as shown,- thehinge 46 comes directly over the upper edge'ofthe division plate 30. Theform 42 is thus seated in the slots 48 of the pedestals. I

The form 43 comprises the angle iron side members 49 and 50, which areof less height than the side plates44 and 45 of the form 42, and links51 are pivoted on the lower flanges 0f the side members which flangesextend toward one another. The links 51 connect the side members forfolding or collapsing movement, inasmuch as the side members when 'downbetween the angle irons or side memhers 49 and 50. As shown, the plate57 has deextended for any distance desired, and the,

sections are readily assembled and are used repeatedly.

As shown, stakes pass down through holes or apertures in the links 51between the side members 49 and 50, to enter the ground, for anchoringthe structure on the sub-base and to assist in retaining the structurein proper position.

The angle iron side members 49 and 50 are seated on the upper edges ofthe pedestals,

and the side member 49 'bears against-the side plate 45 of the form 42,while the side member 50 bears against 9. lug or stop 68 with which theportion 34 of the pedestal is provided, to prevent lateral displacementof the form 43 on the pedestal. The upper edge of the pedestal is thusrecessed to receive the forms and support same against transversedisplacement. The bar 47 of the form 42, in this case, is riveted orotherwise secured to the upstanding flange of the side member 49, tofacilitate the assembly of the two forms.

In order to position the forms at the desired longitudinal line over thesub-base, an adjustable gage or templet is provided comprising thelongitudinally adjustable bars 52 of angle iron or other suitablematerial. Said bars are composed of the sections 53 and 54 overlappingone another, said sections 54 having longitudinal slots 55 receivingclamping bolts 56 carried by the sections 53, whereby the bars, can beadjusted in length. Angle irons or members 57 are secured to thesections 53 to engage opposite sides of the tread of one of the siderails 58 used for defining the side edges of the road, and angle irons59 or similar members are secured to the sections 54 to be disposed atthe opposite sides of the forms 42 and 43. The bars 52 can be spacedapart longitudinally of the structure any desired distance, and theangle irons or members 57 and 59 extend longitudinally from one bar 52to the other. The

bars 52 can also be used as bracesto assist.

in holding the forms in place while the concrete is being poured, andthe templet or gage is removed when tamping and finishing the road.

The structure is readily set up or assembled on the subbase, or may beassembled at one side of the roadand then positioned on the sub-base.and the stakes-60 are driven down to secure the structure on thesub-base. One or more of the templets or gages can be used to assist in.positioning and bracing the forms prior to and during the pouring ofthe concrete. The bar 47 and top plate 67 will close the two forms, toprevent concrete from passing down between the side members of theforms, but the concrete can flow under the forms. In assembling theparts, the division plate 30 is slid lengthwise through the slots 35ofthe pedestals, and the reinforcing rods are then inserted through thepedestals, the tie bars or rods 38 also passing through the divisionplate 30. The forms 42 and 43 are then readily positioned on thepedestals.

After the concrete has set or hardened, the

same having been tamped and finished oifas usual, the forms 42 and 43can then be re moved so as to be used repeatedly, the sections thereofbeing removed from. the hardened concrete and transferred to continue onwith the structure as the road progresses. When the top plate 67 of theform 43 is lifted out from between the side members 49 and 50, thestakes 60 are readily withdrawn, and the side member 50 can then bemoved longitudinally so as to move toward the side member 49. Thiscontracts the form 43 transversely, so that it can be readily lifted outof the channel, the bar 47 being removed from the plates 44 and 45 atthe same time, as seen in Fig. 4. The plates 44 and 45 can then be swungtogether, so as to collapse the form 42, and permit said plates 44 and45 to be readily lifted out of the channel.

The channel or void in the road has the broad shallow portion 61, andthe deep narrow portion 62, with the portion 62 extending down to thedivision plate 30. The division plate and pedestals remain embedded inthe concrete. The angle iron side member 50, as shown, has a protrudingbend at its elbow, so that the side wall of the channel opposite to theportion 62 is formed with an overhanging ledge.

The channel thus formed is used for producing a trafiic line on the roadand a seal or closure for the joint. Thus, as shown in Fig. 6, asupplementary form 63 is used, similar to the form 42, excepting thatthe side plates are integrally united at their lower edges instead ofbeing hinged, and the side plates of said supplementary form 63 springtoward one another when the bar 64is removed. The form 63 is fitted downin the portion 62 of the channel. The portion 61 of the channel is nowfilled with concrete or other suitable plastic material, which may be ofpure white color, or any other color, and which may have othercharacteristics as disclosed in my copending' application Serial No.708,558, filed April 23, 1924. After the concrete in the por- -tion 61of the channel has hardened, the bar 64 is removed, so that the sideplates of the groove above the division plate 30 and along lllll .oneedge of the traflic line 65. The deep groove is filled with asphalt, taror other similar semi-solid or yieldable material,

thereby forming a seal 66 for the joint between the sections or slabs ofthe road. The

seal' will also form a line along the traflic the seal 66 will closethe-joint at the top,

thereby preventing water and other foreign matter from passing downthrough the joint or fracture between the sections or slabs.

It will be noted that the pedestals 32 .not only support the divisionplate 30, but also support the reinforcing rods prior to and during thepouring of the concrete, so that the reinforcing rods and division plateare held in fixed positions above the sub-base.

Said pedestals also serve as supports for the forms until the forms areremoved. The

. pedestals being seated on the sub-base will also prevent the divisionplate and reinforcing rods from being driven down below their seal 66 isin the ,proper elevations during the tamping of the concrete, and afterthe concrete has hardened the pedestals having the flanges 36 and wings37 embedded in the opposite sections or slabs of concrete will assist intying or bonding them together.

Fig. 7 shows a variation, in which the seal is concealed below thetrafiic line. Thus, the ortion 62' flush with-the bottom of the portlon61, and the trafiic line extends the full width of the'channel over theseal 66. There is also shown a modification in the division plate orstrip 30,-same being of arcuate section, without the flat upper andlower edge portions, and with its upper and lower edges spaced from thesubbase and seal 66. The concrete will break or crack between theportion 62 of the channel and the strip 30, and between the lower edgeof said stripand the sub-base, to provide the construction joint havingthe interlocking tongue and groove.

The modified construction shown in Fig. 8 does not usethe division plateor the V- shaped form, such as the form 42 hereinbefore described, butincludes a modified form for the production of a construction joint andtraflic line. Thus, the form 43 comprises the side plates 49 and 50 onwhich is seated the top or cover plate 67 having the depending flangesor angle irons 68 to overlap the inner surfaces of said side plates, forholding the plate 67 on the upper edges of said side plates. Thepedestal 32 is also of 'difi'erent form than the pedestal 32hereinbefore described, ,the base 38 being at that side of the upwardlyprojecting portion 34 opposite to the flanges 36 and wings 37. Thereinforcing rods 38 and 39 pass throu h said flanges and wings,respectively, and t e portion 34 has a recess 48 to receive the loweredge porthe form 43 shown in Fig. 1. The side plates 49 and 50 have theinwardly offset portions 69 which form ribs on the sections or slabs ofconcrete, as seen in Fig. 9. The links 51 have eyes 71 above and belowthe offsets 69, and the links 51 are permanently hinged to the sideplate 50 and are detachably connected by a hinge joint to the side plate49.

Thus, the offset 69 of the side plate 50 has upwardly and downwardlyextending pintles '72 on which the correspondingeyesi'l are fitted forturning movement, and a stake 60 passes down through the opposite eyes71 and through apertures in the offset 69 of the side plate 49. Saidstake also passes through an aperture in the base 33 of the pedestal.The stake 60 passes down into the ground or sub-base for anchoring theform in place, and'the stake also serves to hingedly connect the sideplate 49 and link 51.

The form is used in substantially the same manner as the form 43hereinbefore de scribed, the concrete being poured at the opposite sidesof the form, after the form is properly set up. The form is spaced abovethe sub-base so that the concrete can flow unside sections or slabsconnected by the flexible construction joint.

Fig. 10 illustrates another collapsible form 43 composed of the sideplates 49 having the oflsets 69" between their upper and lower edges. Atop or cover plate 67 seats on the side plates, and a channel member 68"is secured to the lower surface of the plate 67" tofitbetween the upperedges of the side plates. The side plates have inturned flanges 73" attheir upper and lower edges, which stifl'en the sideplate's, and the upr flanges also provide seats for the top p ate 67". Links 51 are pivotedto the flanges 7 3 to connect the side plates so that they aregitudinall'y relatively to one another. The links are arranged insuperposed pairs, so that a stake 60 can be driven down throughapertures in the links of each pair, said links too moved toward oneanother when moved loni l l being located within links have the droppedoffsets 74 permitting the heads or upper ends of the stakesto bedisposed below the plane of the upper flanges 7 3 and top plate 67". Inthis form, the side 5 plates have bayonet slots 75 extending upwa dlyfrom their lower edges throu h the lower flanges 73 and terminating in te ofi' sets 69*. to accommodate the cross tie rods 38",

' side plates 49. disposed within a recess or opening 48 of the upwardlyprojecting portion 34 of the pedestal 32, said plates bearing againstthe opposite, edges of the recess 48, and a top or cover plate 67 beingfitted between the upper edges of the side plates 49.

The side plates have the offsets 69 and the upper edges of the sideplates are held apart by the top plate 67, while the lower'edges of theside plates engage in notches 7 6 in, the

to hold the lower edges of the side plates spaced apart. The side plateshave slots 7 5 extending upwardly from their lower edges foraccommodating the tie rods 38 and per mitting the side plates to belifted out of the channel in the road.

Fig. 12 shows a collapsible form 43 composed of the angle iron sidemembers 49 having the links 51 riveted on their lower flanges, wherebythe form can be contracted transversely for removal from the channel 61formed in the road, the members 49 being of the-shape of the membershown in Fig. 1,

so that the sides of the channel'have over-- 5 hanging ledges wherebythe traflic line member formed in the channel will be keyedto'the road..This formis intended especially for the production of a traffic line inthe surface of the road.

Fig. 13 illustrates a somewhat similar form 43 composed of the angleiron side members 49 and 50 connected by the links 51 pivoted on thelower flanges of said members, and a top plate 67 is disposed betweensaid mem- 55 beIS.

In this illustration there is shown an ordinary division plate 30 'asheretofore used "for dividing the road into opposite side sec- 1 tionsor slabs, said division plate having the off set 31 to form the tongueand groove in the (30 sections or slabs, and stakes are drivendown'through apertures in the offset andi'nto the sub-base forsupporting the division plate in place, and its upper edge is spacedslightly below the surface of the road. Means are provided for attachingthe form 43 to the dihe form, and the upper pedestal at the lowercorners of the recess 48 vision plate so as to support-theform from theupper edge of said division plate, and a traflic line can thus beproduced in the road at the upper edgeof the joint. Thus, rods 77 areinserted through apertures provided in the upstanding flange of the sidemember 49 and have hooks 78 and 79 at their outer and inner ends,respectively. The hooks 7 8 are turned down so as to bear against oneside of thedivision plate 30, while the side member 49 bears against theopposite side of the division plate, with the rods 7 7 extending acrossthe upper edge of the division plate. Wedges 80 are then driven betweenthe upstandingoflange of the member 49 and the hooks 79, therebyclamping the member 49 tightly against the division plate, so that theform 43 is supported from said plate. After the concrete has been poured'andwhile it is still soft, the top plate 67 is removed and the wedges80 also removed. The rods 7 7 can then be manipulated so as to withdrawthem from the member 49. Said rods are first turned'to move the hooks 79above the division plate, and the rods are then turned and slid so as towithdraw the hooks 78 from the member 49. This can be done before theconcrete has hardened, and any dis-' then filled with concrete or othersuitable material to produce a traflic line.

Fig. 13 also depicts a sheet metal pedestal 32 composed of the base 33and upright portion 34, said portion having the slot 35 to receive thedivision plate which extends over and seats upon the base 33; Theportion 34has the upstanding lugs 68 at the opposite sides of the formproviding a recess between them to receive the form, and to prevent theform from being displaced laterally. The stake 60 passes down throughthe base of the pedestal. In order to stiffen and strengthen thepedestal, the base 33 has upstruck corrugations 80 which extend acrossthe bend between the base and upright portion and up into said portion,said corrugations being located at opposite sides of the division plate.By using the corrugations "lighter or thinner sheet metal can be usedfor the pedestals. J

Figs. 14 15- and 16 show the use of a V-shaped form 43 above thedivision plate 30', said division plate having the oflfset 31 and theform being composed of .the upwardly diverging side plates 44 integrallyunited at their lower edges. A bar 47 is disposed between the upperedges'of the side plates for spacing them apart and for closing thespace between the side plates.

The pedestal 69*, a top or cap plate 42 plate 44 32 has the base 33 andupstanding portion 34 provided with the flanges 33 and wings 37, thereinforcing rods 38 and 39 passing through said flanges and wings,respectively. The portion 34 has a slot 35 to receive the divisionplate, and has the \L-shaped slot 48 above the slot 35 to receive'theform 42.

The pedestals support the division plate, reinforcing rods andcollapsible form, during the pouring and setting of the concrete.

*After the concrete has hardened, the bar 47 is removed, and'the sideplates of the form 42 spring toward one another so that they -can bereadily lifted from the groove 62 formed in the road above the divisionplate. The groove is filled with asphalt, tar or similar material toprovide a seal 66 closing the joint. The seal also provides a trafiicline, and the division plate can be of less height than the usualdivision plate as shown in Fig. 13, to effect a saving in material andcost.

The form 43 shown in Figs. 18, 19, 20, 21 and 22, comprises the upwardlydiverging side plates 44 hingedly connected at their lower edges, as at46 and provided between their upper and lower edges with the offsetsbearing on the upper edges of the side plates and having dependingflanges 68 overlapping the, side plates. The top plate also has,atspaced longitudinal points, the depending spacers 68 to be disposedbetween the side plates for holding them spaced apart. The pedestal 32has the base 33 and upwardly extending portion 34 provided with therecess or slot 48 to receive the form 43 and; said portion 34 hasthe/flanges 36 and wings 37 to support the reinforcing rods. Inthisconstruction, the transverse reinforcing rods 38 extend through theform, and the form has slots 75 in the plates 44 extending upwardlythrough the hinge and 'into the ofisets 69*, whereby the plates 44 canbe lifted out of the groove or channel in the road away from the rods 38Fig. 23 shows a joint made by the forms.

shown in Figs; 1822. The groove or channel 62 formed in the road is ofV-shape,and the joint member 66 may be of concrete, asphalt, tar, orother suitable material. The offsets 69 form the interlocking tonguesand grooves, as at 70'. As shown, the tratfic line and joint member 66is spaced slightly above the sub-base. If concrete is used for themember 66", it is preferable to coat the walls of the channel or grooyewith tar or similar material, asat 81 to" prevent the member 66"from'adhering to the sections or slabs of concrete at the opposite sidesof the channel or groove.

Fig. 24 illustrates a simple constructipn wherein the form 42 comprisesthe V-shaped and the bar 47 to be disposed between the upper edge of theplate.

estal 32 comprises the base 33 and upstand- The ped-' ing portion 44having the slot*3 5 for the division plate 30, said portion having aslot 48 above the slot 35 to receive the form 42. The road constructionwill be substantially the same as shown in Fig. 17, excepting that thereinforcing rods are omitted, although suitable reinforcing rods can beem" bedded in the concrete.

Figs. 25 and 26 illustrate further variations in the form and pedestal.The pedestal has the base 33 and upright portion 34, said uprightportion having flanges 36 from which the wings 37 extend. Thereinforcing rods 38 and 39 extend through the flanges 36 and wings 37,respectively, to be supported by a pedestal above the sub-base. The form43 isof T-shape, and comprises the angle side portions 49 connected by aV-shaped portion 42, and a top or cover plate 67 is adapted to bepositioned between the angle portions 49, said top plate being ofchannel shape with its flanges depending to overlap the inner sides ofthe angle portions 49. The portion 42 tends to spring to laterallycontracted position, as seen in Fig. 26, so as to contract the lower orbody portion of the form when the top plate 67 is removed, said topplate, when inserted, holding the form expanded, as seen in Fig. 5." Theform is seated on the upper edge of the pedestal within the recessdefined between the upstanding lugs 68 with which the portion 34 of thepedestal is provided, andsaid portion of the pedestal has a V-shapedrecess or SlOt= 48 to receive the portion 42 of the form. The upper edgeof the pedestal is also corrugated, as at 82 where the form seats on thepedestal, thereby strengthening the pedestal. Corrugations 82 arepressed in the base 33 of the pedestal and extend upwardly into theportion 34, to stiffen and brace the pedestal. The wings 37 have baseportions 84 projecting therefrom'in a direction opposite to thedirection 'in which the base 33 projects, and the portions 84 can reston the sub-base with the base 33. The portions 84 and wings 37 havecorrugations 85 pressed therein similar to the corrugations 81. Theouter edges of the wings 37 are also corrugated, as at 83, in order toassist in anchoring the opposite portions of the pedestal in thesections or slabs of concrete, so that the pedestal will tie or bond thesections or slabs together. If the pedestals are madeof sufficientlyheavy sheet metal then the tie rods .38 may be dispensed with.

Figs. 26 shows a channel 61 formed in the surface of the concrete by theform, with the top plate 67 removed, so that the lower or body portionof the form will be contracted transversely for ready removal from thechannel without chipping or loosening the concrete from the edges of thechannel. The portion 42 of the form defines a V-shaped groove 61. belowthe bottom of the channel the bottom and oneside corrugated, as at 87,and the V-shaped division form 42 bears 61 proper between the side wallsof the channel. The groove 62 material, such as asphalt or tar, whilethe channel portion or other material to form the traflic line.

Figs. 27 and 28 illustrate a form' l3 having against the opposite sideof the form 43 The sides of the form 42 are held apart bya plosure andspreading bar 47 inserted between the upper edges of the sides of theform 42 The pedestal 32 comprises the base 33 up right portion 34flanges 36 and wings 37 The forms are seated on the portion 34 which hasa recess 4:8 to receive the form 42 4 facing structure, the

- structure. The form 42 and said portion has the upstanding lugs 68. toprevent transverse displacement of the-forms I on the pedestal.Theportion 34 of the pedestal has openings 86 to permit the concrete toflow through the pedestal from one side to the other. The wings 37 havethe hooks or anchor portions 83 projecting therefrom to be embedded inthe concrete. for tying or bonding the two sections or slabs of concretetogether. The reinforcing rods 38 and 39 extend-through the flanges 36and wings .37 The channel formed in the surface of the concrete issimilar to that shown in Figs. 5 and 6, excepting that the bottom andside wall of the portion 61 of the channel are corrugated, as seen inFig. 28, so as to more securely unite the tratlic line with the roadprovides the groove 62 for receiving the sealing material, and when theconcrete has set, and the bar 47 is removed, the form 42-, by itsresiliency, contracts itself transversely, so that the forms 42 and 43can be removed from the channel. Having thus described the invention,what is claimed as new is 1. A form construction of the characterdescribed: comprising associated traffic line and division forms toproduce a channel in the surface of a concrete road or similar surfacingstructure, the division form projecting downwardly below the trafiiclineform to provide the cha-nnel'with a groove to receive sealingmaterial below the bottom of the traffic line. i

2. A form construction of the character described comprising associatedtraiiic line and division forms to produce a channel'in the surface of aconcrete road or similar surdivision form projecting downwardly belowthe traffic line form to form the channel with a groove to receivesealing naterial, one of said forms being constructed to be contractedtransversely to facilitate the removal of the forms from the channel.

3. A form construction of the character described comprising asupporting pedestal to rest on a sub-base, and companion traffic linecan receive the sealing 61 can receive the concrete and division formsadapted to be supported by the pedestal in associated relation in thedesired line and grade.

4. A form construction of the character described comprising supportingmeans having provision for supporting a division plate, a form to besupported by said means above said division plate, and a companion format one side of the firstnamed form and associat= ed therewith, saidforms producing a channel in a concrete surfacing structure in whichthey are disposed, the sec'ondnamed form reducing a wide shallow-portionin the channel for a trafiic line-and the firstnamed form producing adeep portion for receiving a seal over the division plate. 1 5. A formconstruction of the character described comprising pedestals havingprovision for receiving and supporting a division plate, a form to besupported by the pedestals above said division plate and including sideplates movable toward and away from one another, and a companion form tobe supported by the pedestals and including side members and meansconnecting them for the movement of said side members toward and awayfrom one another, said forms being disposed side by side with thecorresponding side plate and member disposed together.

6. A form construction of the character described comprising pedestalshaving provision for receiving and supporting a division plate, a formto be supported by the pedestals having upwardly diverging side platestobe moved toward and away from one another, said form including a bar. tobe disposed between the upper edges of said side plates, and a companionform including side members, means connecting said-side members for themovement thereof toward and away from one another, and a top plate to bedisposed between said side members, the second form being adaptedto besupported by the pedestals with one side member bearing against thecorresponding side plate of the firstnamed form.

7 A collapsible form comprising side plates having their lower edgeshingedly connected, and means for supporting said plates on a sub-baseto define a groove in a concrete road or similar surfacing structure.

8. A collapsible form comprising side plates having their lower edgesconnected for the swinging movement of the plates toward and away fromone another, and a longitudinal member to be removably disposed betweenthe upper edges of said plates for spacing said plates apart and closingthe space between them.

9. A collapsib e form comprising side plates having their lower edgeshingedly connected, and a longitudinal member to be disposed between theupper edges of said plates for spacing said plates apart and closing thespace between them.

10. A construction of the character described comprising supportingmeans having having provision for receiving and supporting a divisionplate. and a removable form supported by said means above the divisionplate to produce a channel in a concrete surfacing struc' ture above thedivision plate.

11. A construction of the character described comprising supportingmeans having provision for receiving and supporting a division plate,and a form to be supported by said means above said division plate andhaving side plates to be moved toward one another, said form beingadapted to produce a channel in a concrete surtacing structure above thedivision plate.

12. A structure of the character described comprising pedestals havingprovision for receiving and supporting a division plate, and a form tobe-supported by the pedestals above the division plate for producing achannel in a concrete surfacing structure above the division plate.

13. A construction of the character '(le cribed comprising pedestalshaving slots for receiving and supporting a division plate, and a formto be disposed above said division plate for producing a channel in aconcrete surfacing structure above the division plate, the pedestalshaving slots above the aforesaid slots for receiving and supporting saidform.

14. A construction of the character described comprising a collapsibleform having side plates movable toward and away from one another, andpedestals having bases to seat on a sub-base and having recesses spacedabove said bases for receiving said form to support it in a. positionelevated above the sub-base. I

15. A pedestal ot' the character described having means to seat on asub-base adapted forsupporting a form in a position elevated above thesub-base and having means for supporting reinforcing rods above saidsubbase.

I6. The combination of a pedestal adapted to seat on a sub-base, and aform adapted to be supported by said pedestal for dividing a concretesurfacing structure into opposite sections or slabs, said pedestalhaving deformed portions to be disposed at opposite sides of said formand to be embedded in said sections or slabs for tying them together.

17. A pedestal of the character described divide a concrete surfacingstructure into oppositesections or slabs, and said pedestal l1avingportions to be embedded and anchored in said sections or slabs for tyingthem together and preventing separation thereof.

18. A construction of the character de scribed comprising a pedestal toseat on a sub-base, and a form adapted to be supported by the pedestalto form a channel in a cona portion for supporting a form to cretesurfacing structure dividing said structure into opposite sections orslabs at the opposite sides of the channel, said pedestal havingportions to be embedded and anchored in said sections-or slabs at theopposite sides of the channel for tying said sections or slabs together.

19. A pedestal of the character described to seat on a sub-base, and aform for producing a channel in a concrete surfacing structure, thepedestal having a recess for removably receiving said form and tosupport the form in elevated position and against lateral displacementabove the sub-base.

20. A pedestal of the character described comprising a base, a portionextending upwardly from the base and having provision for supporting aform in a position elevated above said base, and portions extending fromsaid portion for supporting reinforcing rods at opposite sides of saidform.

21. A pedestal of the character described comprising a base, a portionextending upwardly from the base and having provision for supporting aform, flanges extending from said portion for supporting a transverserod, and wings extending from said flanges for supporting longitudinalreinforcing rods.

22. A pedestal of the character described comprising a base, and aportion extending upwardly from the base and having provisition forsupporting a form, said portion being inclined to overhang the base, toprovide for the yielding action of said portion.

23. A pedestal of the character described comprising a base and ayieldable upwardly extending supporting portion having provision forsupporting a form. 4

24. A collapsible form comprising side members, and links connectingthem for the movement of said members toward and away from one anotherwhen moved longitudinally relatively to one another. f 25. A collapsibleform comprising angle iron side members having flanges extendingupwardly and other flanges at the bottom extending toward one another,and links pivoted to the last named flanges.

26. A collapsible form comprising spaced form members, and linksconnecting them to permit said members to be moved toward and away fromone another, said links having .Ztake receiving openings between saidmemers.

27. A collapsibleform having upwardly diverging side portions whoseupper edges are adapted to be moved toward one another for removing theform from a groove, and a longitudinal member adapted to be, removablydisposed between said edges for spacing said portions apart andclosingthe space between them. 28. A joint and reinforcing structure to beembeddedin a concrete road, comprising messes e member adapted to besupported on the sub-base of the road, a joint member supported by thefirst named member, and a reinforcing rod also supported by the firstnamed member.

29. A joint and reinforcing structure to be embedded in a concrete road,comprising a supporting member adapted to be supported on a roadsub-base, a joint member sup- N ported by said supporting member, and areinforcing rod also supported. byosaid su porting member and extendingtransverse y under said joint member.

30. A joint and reinforcing structure to be embedded in a concrete road,comprising a supporting member adapted to be supported on a roadsub-base, a joint member supported by said supporting member, andparallel reinforcing rods also supported by said supporting member andlocated at 0pposite sides of said joint member.

31. A joint and reinforcing structure to be embedded in a concrete road,comprising a supporting member adapted to be supported on a roadsub-base, a joint member'supported by said supporting member, reinforc-'mg rods supportedby said supporting member longitudinally of and atopposite sides of the joint member, and a reinforcing rod supported bysaidsupporting member transversely of said joint member.

32. A joint and reinforcing structure to be embedded in a concrete road,comprising a supporting member ada ted to be supported on a roadsub-base and aving an upwardlyo ening slot, a joint member seated insaid s 0t, and reinforcement, said supporting member having means suporting said reinforcement above the sub-Ease.

In testimony whereof I hereunto a my signature.

JOHN N. ELTZEL.

